Improvement



UNITED STATES PATENT OFFICE.

CHRISTIAN ANDERSEN, OF BROOKLYN, NEW YORK.

IMPROVEMENT IN FILTERS.

Specification forming part of Lcttcrs Patent No. 151,339, dated May 26,1874 application led May 14, 1874.

To all whom fit may concern:

Be it known that I, CHRISTIAN ANDEnsEN, of Brooklyn, in the county ofKings and State of New York, have invented certain new and usefulImprovements in Filters, of which the following is a specification:

This invention is illustrated in the accompanying drawing, in whichFigure l represents a vertical section of this invention. Fig. 2 is ahorizontal section of the same.

Similar letters indicate corresponding parts.

This invention consists in the arrangement of a lining of cloth, felt,or other absorbent material on the solid sides of a filtering-vessel,which is iilled with bone-black or other iiltering material, and the topor bottom, or both of which are perforated, while the liquid to befiltered is introduced through a pipe with a rose-head, in such a mannerthat by the absorbent lining the formation of channels through theltering material close to the sides of the ltering-vessel is prevented,and the liquid to be liltered is brought in intimate contact with thefiltering material.

In the drawing, the letter A designates a vessel made of sheet metal orany other suitable material, in any desirable form or shape. The sides aa of this vessel are solid, but its head b (or its bottoni) isperforated, and over this perforated head is placed a cap, B, so thatthe liquid to be ltered passes through the perforations in the head binto the space un der the cap B, whence it discharges through the pipec. The liquid is admitted t the liltering-vessel through a pipe, d,which terminates in a rose-head, e, situated in the interior of thevessel A, and the solid sides of this vessel are lined on their innersurfaces with layers f of cloth, felt, or other absorbent material. l

The vessel A is packed with bone-black or other filtering material, andif the sides ofsaid vessel are not lined with an absorbent material theliquid to be filtered, on being admitted to the vessel A, forms`channels through the iiltering material close to the sides of saidvessel, and a large percentage of the liquid escapes from thefiltering-vessel Without having` come in contact with the filteringmaterial, 'and consequently without having been deprived of theimpurities mixed with it. This disadvantage I have successfully obviatedby lining the sides of the filtering-vessel with an absorbent material,and my experience shows that by the application of such lining theformation of channels through the iilterin g material is successfullyavoided, and the liquid to be iltered is prevented from passing throughthe ltering material in the vessel A without coming in intimate contactwith the same, so that said liquid, as it discharges from thetiltering-vessel, is deprived of the impurities which had been mixedwith it.

That I claim as new, and desire to secure by Letters Patent, is-

The arrangement of a lining, f, of cloth, felt, or other absorbentmaterial on the Asolid sides of a filtering-vessel, A, which is providedwith perforations in its head or bottom, or in both, and to which theliquid to be iiltered is admitted through a pipe, d, substantially asshown and described.

In testimony that I claim the foregoing I have hereunto set my hand andseal.

o. ADERSEN. [n s] IVitnesses y W. HAUFF, E. F. KASTENHUBER.

